Dow Lake Dam is located in Strouds Run State Park in Athens County, just east of the City of Athens. The dam was originally constructed in 1959 and serves as a recreational lake for the park. The facility includes an earth fill embankment and an 8-foot-diameter concrete spillway pipe with a 16-foot-diameter concrete riser. The structure has a 2-foot diameter sluice gate lake drain in the spillway riser. The earthen embankment is 775 feet long and 66 feet high. Dow Lake (Strouds Run Lake) impounds approximately 161 acres at normal pool and has a contributing drainage area of 7.3 square miles. Dow Lake Dam is classified as a Class I dam in which failure of the structure would result in probable loss of life.
Several deep slides have been observed on the earthen embankment for Dow Lake Dam, requiring temporary repairs of the embankment over the last two years. In addition, the dam does not currently pass the minimum design flood standard required in Ohio Administrative Code 1501:21-13-02.
Preliminary alternatives for the remediation of these problems were considered and a recommended alternative was selected. Based upon the condition of the downstream slope, the embankment will be widened increasing the crest width by 50 feet and by flattening the slope of the downstream face of the embankment from 2.5H:1V to 3H:1V. The toe drain system will be replaced and a chimney drain system will be added to the embankment during widening. Improvements to meet flood capacity will be made as part of a future construction project. The Division of Engineering has requested qualifications for professional design services, subsurface investigations and construction administration services. The total estimated project cost is $2.9 million. Project construction will be completed in Fall, 2014.